gr-filter: Add ichar/ishort decimator

Current resamplers do not support ichar and ishort as an input type. When processing streaming ichar data from external sources (such as the ATA), decimation in native ichar would be faster than converting to another data type then decimating. This block provides the ability to decimate the ichar stream directly. Support was also added to support ishort data in the same manner.
author: ghostop14 <ghostop14@gmail.com> 2020-02-16 21:05:15 -0500
committer: Michael Dickens <michael.dickens@ettus.com> 2020-02-20 11:43:01 -0500
commit: c39625c004ebb6b13e23aac4bed97e2bc1151065 (patch)
tree: da8720f06a2eb70484532567417a676f829ab174 /gr-filter/examples
parent: 458414c7b2ab93fa1a6d130fa64d907dd9fca5f0 (diff)
1 files changed, 299 insertions, 0 deletions
diff --git a/gr-filter/examples/test_ichar_decim.grc b/gr-filter/examples/test_ichar_decim.grc
new file mode 100644
index 0000000000..993fcc192c
--- /dev/null
+++ b/gr-filter/examples/test_ichar_decim.grc
@@ -0,0 +1,299 @@
+options:
+  parameters:
+    author: ''
+    catch_exceptions: 'True'
+    category: '[GRC Hier Blocks]'
+    cmake_opt: ''
+    comment: ''
+    copyright: ''
+    description: ''
+    gen_cmake: 'On'
+    gen_linking: dynamic
+    generate_options: qt_gui
+    hier_block_src_path: '.:'
+    id: test_ichar_decim
+    max_nouts: '0'
+    output_language: python
+    placement: (0,0)
+    qt_qss_theme: ''
+    realtime_scheduling: ''
+    run: 'True'
+    run_command: '{python} -u {filename}'
+    run_options: prompt
+    sizing_mode: fixed
+    thread_safe_setters: ''
+    title: IChar Decimator
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [8, 8]
+    rotation: 0
+    state: enabled
+
+blocks:
+- name: decim
+  id: variable
+  parameters:
+    comment: ''
+    value: '5'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [381, 20]
+    rotation: 0
+    state: true
+- name: samp_rate
+  id: variable
+  parameters:
+    comment: ''
+    value: '500000'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [184, 12]
+    rotation: 0
+    state: enabled
+- name: analog_sig_source_x_0
+  id: analog_sig_source_x
+  parameters:
+    affinity: ''
+    alias: ''
+    amp: '127'
+    comment: ''
+    freq: '1000'
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    offset: '0'
+    phase: '0'
+    samp_rate: samp_rate
+    type: complex
+    waveform: analog.GR_COS_WAVE
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [41, 238]
+    rotation: 0
+    state: true
+- name: blocks_complex_to_interleaved_char_0
+  id: blocks_complex_to_interleaved_char
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    scale_factor: '1.0'
+    vector_output: 'False'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [488, 336]
+    rotation: 0
+    state: true
+- name: blocks_complex_to_interleaved_char_0_0
+  id: blocks_complex_to_interleaved_char
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    scale_factor: '1.0'
+    vector_output: 'False'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [714, 221]
+    rotation: 0
+    state: true
+- name: blocks_interleaved_char_to_complex_0
+  id: blocks_interleaved_char_to_complex
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    scale_factor: '1.0'
+    vector_input: 'False'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [934, 339]
+    rotation: 0
+    state: true
+- name: blocks_interleaved_char_to_complex_0_0
+  id: blocks_interleaved_char_to_complex
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    scale_factor: '1.0'
+    vector_input: 'False'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [935, 219]
+    rotation: 0
+    state: true
+- name: blocks_throttle_0
+  id: blocks_throttle
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    ignoretag: 'True'
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    samples_per_second: samp_rate
+    type: complex
+    vlen: '1'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [274, 278]
+    rotation: 0
+    state: true
+- name: ival_decimator_0
+  id: ival_decimator
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    datatype: byte
+    decimation: decim
+    maxoutbuf: '0'
+    minoutbuf: '0'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [683, 346]
+    rotation: 0
+    state: true
+- name: qtgui_freq_sink_x_0
+  id: qtgui_freq_sink_x
+  parameters:
+    affinity: ''
+    alias: ''
+    alpha1: '1.0'
+    alpha10: '1.0'
+    alpha2: '1.0'
+    alpha3: '1.0'
+    alpha4: '1.0'
+    alpha5: '1.0'
+    alpha6: '1.0'
+    alpha7: '1.0'
+    alpha8: '1.0'
+    alpha9: '1.0'
+    autoscale: 'False'
+    average: '1.0'
+    axislabels: 'True'
+    bw: samp_rate/decim
+    color1: '"blue"'
+    color10: '"dark blue"'
+    color2: '"red"'
+    color3: '"green"'
+    color4: '"black"'
+    color5: '"cyan"'
+    color6: '"magenta"'
+    color7: '"yellow"'
+    color8: '"dark red"'
+    color9: '"dark green"'
+    comment: ''
+    ctrlpanel: 'False'
+    fc: '0'
+    fftsize: '1024'
+    freqhalf: 'True'
+    grid: 'False'
+    gui_hint: ''
+    label: Relative Gain
+    label1: Resampler
+    label10: ''''''
+    label2: ichar decim
+    label3: ''''''
+    label4: ''''''
+    label5: ''''''
+    label6: ''''''
+    label7: ''''''
+    label8: ''''''
+    label9: ''''''
+    legend: 'True'
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    name: '""'
+    nconnections: '2'
+    showports: 'False'
+    tr_chan: '0'
+    tr_level: '0.0'
+    tr_mode: qtgui.TRIG_MODE_FREE
+    tr_tag: '""'
+    type: complex
+    units: dB
+    update_time: '0.10'
+    width1: '1'
+    width10: '1'
+    width2: '1'
+    width3: '1'
+    width4: '1'
+    width5: '1'
+    width6: '1'
+    width7: '1'
+    width8: '1'
+    width9: '1'
+    wintype: firdes.WIN_BLACKMAN_hARRIS
+    ymax: '20'
+    ymin: '-120'
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [1178, 244]
+    rotation: 0
+    state: true
+- name: rational_resampler_xxx_0
+  id: rational_resampler_xxx
+  parameters:
+    affinity: ''
+    alias: ''
+    comment: ''
+    decim: decim
+    fbw: '0'
+    interp: '1'
+    maxoutbuf: '0'
+    minoutbuf: '0'
+    taps: ''
+    type: ccc
+  states:
+    bus_sink: false
+    bus_source: false
+    bus_structure: null
+    coordinate: [482, 195]
+    rotation: 0
+    state: true
+
+connections:
+- [analog_sig_source_x_0, '0', blocks_throttle_0, '0']
+- [blocks_complex_to_interleaved_char_0, '0', ival_decimator_0, '0']
+- [blocks_complex_to_interleaved_char_0_0, '0', blocks_interleaved_char_to_complex_0_0,
+  '0']
+- [blocks_interleaved_char_to_complex_0, '0', qtgui_freq_sink_x_0, '1']
+- [blocks_interleaved_char_to_complex_0_0, '0', qtgui_freq_sink_x_0, '0']
+- [blocks_throttle_0, '0', blocks_complex_to_interleaved_char_0, '0']
+- [blocks_throttle_0, '0', rational_resampler_xxx_0, '0']
+- [ival_decimator_0, '0', blocks_interleaved_char_to_complex_0, '0']
+- [rational_resampler_xxx_0, '0', blocks_complex_to_interleaved_char_0_0, '0']
+
+metadata:
+  file_format: 1
author	ghostop14 <ghostop14@gmail.com>	2020-02-16 21:05:15 -0500
committer	Michael Dickens <michael.dickens@ettus.com>	2020-02-20 11:43:01 -0500
commit	c39625c004ebb6b13e23aac4bed97e2bc1151065 (patch)
tree	da8720f06a2eb70484532567417a676f829ab174 /gr-filter/examples
parent	458414c7b2ab93fa1a6d130fa64d907dd9fca5f0 (diff)